HP D3600 Enclosure User Manual Page 47
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Recognizing disk drive failure
In an HP enclosure, a steadily glowing fault LED indicates that a disk drive has failed. Other
indications of failed disk drives are as follows:
• ACU represents failed drives with a distinctive icon.
• HP SIM can detect failed drives remotely across a network. (For more information about HP
SIM, see the documentation on the Management CD.)
• ADU lists all failed drives.
• Operating System log files
For additional information about diagnosing disk drive problems, see the HP ProLiant Servers
Troubleshooting Guide.
Effects of a disk drive failure
When a disk drive fails, all logical drives that are in the same array are affected. Each logical
drive in an array might be using a different fault-tolerance method, so each logical drive can be
affected differently.
• RAID0 configurations cannot tolerate drive failure. If any physical drive in the array fails, all
non-fault-tolerant (RAID0) logical drives in the same array also fail.
• RAID1+0 configurations can tolerate multiple drive failures as long as no failed drives are
mirrored to one another (with no spares assigned).
• RAID5 configurations can tolerate one drive failure (with no spares assigned).
• RAID6 with ADG configurations can tolerate simultaneous failure of two drives (with no spares
assigned).
Compromised fault tolerance
If more disk drives fail than the fault-tolerance method allows, fault tolerance is compromised, and
the logical drive fails.
Factors to consider before replacing disk drives
Before replacing a degraded drive:
• Open HP SIM and inspect the Error Counter window for each physical drive in the same array
to confirm that no other drives have any errors. For details, see the HP SIM documentation on
the Management CD.
• Be sure that the array has a current, valid backup.
• Use replacement drives that have a capacity at least as great as that of the smallest drive in
the array. The controller immediately fails drives that have insufficient capacity.
Recognizing disk drive failure 47
- Abstract 1
- DescriptionDateEdition 2
- Contents 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- 1 Hardware 7
- LFF Front view 8
- SFF Front view 9
- Rear view 10
- Disk drives 11
- Front status and UID module 12
- Power supply module 13
- Fan module 14
- I/O module 15
- Rear power and UID module 16
- 2 Technical specifications 17
- 3 Deployment types 18
- 4 Installation 19
- Preliminary tasks 20
- Preliminary tasks 21 21
- Striping methods 22
- RAID levels 22
- Disk drive sizes and types 23
- Spare disks 23
- Array sizing 24
- Preparing the site 25
- Racking the disk enclosure 26
- Racking the disk enclosure 27 27
- 28 Installation 28
- Disk drive options 29
- Disk drive guidelines 29
- Installing a disk drive 29
- 30 Installation 30
- Preparing the server 31
- Overview 32
- Cabling best practices 32
- 34 Installation 34
- Connecting power cords 35
- Power on best practices 36
- Power on procedures 36
- 5 Configuration 38
- 6 Operation and management 39
- 40 Operation and management 40
- 7 Cabling examples 41
- Single-domain example 42
- Dual domain example 43
- 8 Troubleshooting 44
- Is the fan LED amber? 46
- Compromised fault tolerance 47
- Time required for a rebuild 48
- Handling disk drive failures 49
- 9 Replacement procedures 50
- Replacement instructions 51
- Hardware components 52
- Contacting HP 54
- Related information 55
- Customer self repair 55
- Rack stability 56
- FCC rating label 57
- Modifications 57
- Battery replacement notices 58
- Regulatory notices 60
- Japanese notices 61
- Korean notices 61
- Taiwanese notices 61
- Recycling notices 62
- Estonian notice 63
- Finnish notice 63
- French notice 63
- German notice 63
- Greek notice 63
- Hungarian notice 64
- Italian notice 64
- Latvian notice 64
- Lithuanian notice 64
- Polish notice 64
- Portuguese notice 65
- Romanian notice 65
- Slovak notice 65
- Spanish notice 65
- Swedish notice 65
- Turkish notice 66
- 68 Index 68
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